package com.sky.service.impl;

import ch.qos.logback.core.joran.util.beans.BeanUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.annotations.Delete;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;


    /***
     * 新增分类
     * @param categoryDTO
     */
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        //属性拷贝
        BeanUtils.copyProperties(categoryDTO, category);
        //分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);
        //设置创建时间、修改时间、创建人、修改人
       /* category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());*/
        categoryMapper.insert(category);
    }

    /**
     * 分页查询
     *
     * @param categoryPageQueryDTO
     * @return
     */
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {

        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> resulf = page.getResult();
        return new PageResult(total, resulf);
    }

    /**
     * 根据id删除分类
     *
     * @param id
     */
    public void deleteById(long id) {

        //根据分类id查询菜品
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //判断当前分类是否关联了菜品，如果关联了则不能删除，抛出业务异常
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //判断当前分类是否关联了菜品，如果关联了则不能删除，抛出业务异常
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);

    }

    /**
     * 根据id修改分类
     *
     * @param categoryDTO
     */
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        /*category.setCreateUser(BaseContext.getCurrentId());
        category.setCreateTime(LocalDateTime.now());*/

        categoryMapper.update(category);
    }

    /**
     * 启用禁用
     *
     * @param status
     * @param id
     */
    public void startorStop(Integer status, long id) {
        Category category = Category.builder().id(id)
                .status(status)
               /* .updateUser(BaseContext.getCurrentId())
                .updateTime(LocalDateTime.now())*/
                .build();
        categoryMapper.update(category);

    }

    /**
     * 根据类型查询分类
     *
     * @param category
     * @return
     */
    public List<Category> list(Category category) {

        return categoryMapper.list(category);
    }
}
